Structural Form Of The Detection Of Zirconia Insert

      The direct-insertion test is to inject zirconia directly into the high-temperature measured gas, direct detection of the oxygen content in the gas, this detection method is suitable for detection of gas temperature at 700℃~1150℃ (special structure can also be used for 1400 ℃ high temperature), it uses the high temperature of the measured gas to achieve the operating temperature of zirconia, no need for additional heaters. The key technology of the direct-insertion oxygen probe is the high-temperature sealing and electrode problem of ceramic materials. The structure of two kinds of direct-inserted oxygen probes is listed below.Zirconia Insert

      This form is from the sampling method used in the form of zirconia tube developed, that is, the original zirconia tube lengthened, so that zirconia can be directly extended to the high temperature of the measured gas. This structure eliminates the problem of high temperature seals.Zirconia Insert

      Because of the need to inject zirconia directly into the detection gas, the length of the oxygen probe has a high requirement, its effective length is around 500mm~1000mm, the special environment length can reach 1500mm. And the detection accuracy, the work stability and the service life all have the high request, therefore the direct-inserted oxygen probe is difficult to adopt the traditional Zirconia oxygen probe monolithic zirconia tube structure, but takes the technical request high zirconia and the alumina tube connection structure. Sealing performance is one of the most critical technologies of this zirconia oxygen probe.Zirconia Insert

      At present, the most advanced connection mode in the world, it is the permanent welding of zirconia and alumina pipe together, its sealing performance is excellent, and the method of mining style detection, straight-plug detection has obvious advantages: zirconia direct contact with the gas, high detection accuracy, rapid reaction, maintenance is small.Zirconia Insert